Patents by Inventor Richard G. Powell

Richard G. Powell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5234186
    Abstract: An improved wrist rest for use when typing on a typical computer keyboard for reducing the severity of symptoms of hand and wrist repetitive stress ailments such as carpal tunnel syndrome is disclosed. The apparatus includes a rectilinear keyboard support base to which a wrist supporting rail is secured. Cross sections perpendicular to the axis of elongation of the rail have a geometry that includes forward and rearward nodes with a palm depression lying therebetween for supporting the hypothenars of the user's hands. A plane tangential to both forward and rearward nodes of the support rail intersects the plane of the keyboard support surface at a predetermined angle that is equal to the angle of the keyboard's key plane with respect to the horizontal when same is placed on a horizontal work surface.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: August 10, 1993
    Inventor: Richard G. Powell
  • Patent number: 5185028
    Abstract: N-substituted loline derivatives having the formula ##STR1## have utility as herbicides and insecticides.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: February 9, 1993
    Assignee: The United States of America, as represented by the Secretary of Agriculture
    Inventors: Richard G. Powell, Richard J. Petroski
  • Patent number: 5139562
    Abstract: A method for inhibiting sprouting of tubers including the step of exposing tubers to the oxygenated monoterpenes: cineole, fenchone, menthol, or mixtures thereof. Preferably, the tubers are exposed to a composition having an oxygenated monoterpene fraction, and wherein cineole, fenchone, menthol, or a mixture thereof form the major portion of the oxygenated monoterpene fraction.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: August 18, 1992
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Steven F. Vaughn, Gayland F. Spencer, Richard G. Powell
  • Patent number: 4966913
    Abstract: Members of a novel class of organic nitriles related to an indole alkaloid of Dithyrea wislizenii (Cruciferae) have been discovered to be patent feeding inhibitors of the fall armyworm and European corn borer.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: October 30, 1990
    Assignees: The United States of America as represented by the Secretary of Agriculture, Cornell Research Foundation, Inc.
    Inventors: Richard G. Powell, Kenneth L. Mikolajczak, Bruce W. Zilkowski, Jon Clardy, Ellen K. Mantus
  • Patent number: 4942247
    Abstract: Members of a novel class of organic nitriles related to an indole alkoaloid of Dithyrea wislizenii (Cruciferae) have been discovered to be potent feeding inhibitors of the fall armyworm and European corn borer.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: July 17, 1990
    Assignees: The United States of America as represented by the Secretary of Agriculture, Cornell Research Foundation, Inc.
    Inventors: Richard G. Powell, Kenneth L. Mikolajczak, Bruce W. Zilkowski, Jon Clardy, Ellen K. Mantus
  • Patent number: 4532327
    Abstract: A novel alkaloid compound named "sesbanimide" has been isolated from the tissue of a leguminous plant known as Sesbania drummondii. Sesbanimide is characterized by the structural formula ##STR1## and is effective as an antineoplastic agent in animals.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: July 30, 1985
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Richard G. Powell, Cecil R. Smith, Jr.
  • Patent number: 4418064
    Abstract: A novel group of maytansinoid compounds has been discovered in the seed tissue of Trewia nudiflora. They are represented by the general formula ##STR1## and are uniquely characterized by a 12-membered ring joining C-3 and the amide nitrogen at C-18, and also by a distinguishing methoxy group on the C-15 carbon. These isolates have proven to be effective in causing the remission of one or more types of malignancies.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: November 29, 1983
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Richard G. Powell, Cecil R. Smith, Jr.
  • Patent number: 4315929
    Abstract: A novel maytansinoid compound discovered in the seed tissue of Trewia nudiflora has been found to be effective in controlling a common insect pest, the European corn borer. This compound is represented by the formula: ##STR1## and is characterized by a distinguishing methoxy group on the C-15 carbon.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: February 16, 1982
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Bernard Freedman, Richard G. Powell, Cecil R. Smith, Jr.
  • Patent number: 4313946
    Abstract: A novel group of maytansinoid compounds has been discovered in the seed tissue of Trewia nudiflora. They are represented by the general formula ##STR1## and are all characterized by a distinguishing methoxy group on the C-15 carbon. These isolates have proven to be effective in causing the remission of one or more types of malignancies.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: February 2, 1982
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Richard G. Powell, Cecil R. Smith, Jr.
  • Patent number: 4206221
    Abstract: A novel alkaloid named "cephalomannine" has been produced from the tissue of plants belonging to the group commonly known as taxads and has proven to be effective in causing the remission of leukemic tumors in mice treated therewith.
    Type: Grant
    Filed: January 3, 1979
    Date of Patent: June 3, 1980
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Roger W. Miller, Richard G. Powell, Cecil R. Smith, Jr.
  • Patent number: 4200639
    Abstract: A novel alkaloid compound named "sesbanine" has been produced from the tissue of a leguminous plant known as Sesbania drummondii.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: April 29, 1980
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Richard G. Powell